SIM800L GSM Module Connections (Requires Level Shifting) The SIM800L module needs special attention because it operates at 3.3V logic levels while Arduino uses 5V. We need a voltage divider circuit to ...

The following is a hardware diagram of the Arduino GSM Alert system built around an Arduino Uno and SIM800L module. When the hardware setup is ready, just upload the given sketch to Arduino Uno and ...

An Arduino is equipped with a piezo sensor to detect impact, and a GSM shield takes care of the texting. It’s an interesting concept, similar to requiring police officers to wear body cameras.

When we send SMS to GSM module by Mobile, then GSM receives that SMS and sends it to Arduino. Now Arduino reads this SMS and extract main command from the received string and stores in a variable.

arduino gsm security alarm Working of the system is very simple and self-explanatory. When input power is applied to the system, the system goes into standby mode. However, when the terminals of ...

Therefore, this study aims to develop a Smart Flood Sensor System (SFSS) using Arduino and GSM modules to detect and monitor whenever a flood comes and make people aware of the risk of flooding. This ...